Enter the total resistance (ohms) and the total length (m) into the Calculator. The calculator will evaluate the Resistance Per Meter. 

Resistance Per Meter Formula

RPL = R / L

Variables:

  • RPL is the Resistance Per Meter (ohms/m)
  • R is the total resistance (ohms)
  • L is the total length (m)

To calculate Resistance Per Meter, divide the total resistance by the total length.

How to Calculate Resistance Per Meter?

The following steps outline how to calculate the Resistance Per Meter.


  1. First, determine the total resistance (ohms). 
  2. Next, determine the total length (m). 
  3. Next, gather the formula from above = RPL = R / L.
  4. Finally, calculate the Resistance Per Meter.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

total resistance (ohms) = 30

total length (m) = 230

Frequently Asked Questions

What factors affect the resistance of a wire?

The resistance of a wire is affected by several factors, including the material it is made of (its resistivity), its length, its cross-sectional area, and the temperature of the environment. The formula R = ρL/A, where R is the resistance, ρ is the resistivity, L is the length, and A is the cross-sectional area, encapsulates these relationships.

How does temperature affect wire resistance?

Temperature has a significant impact on the resistance of a wire. As temperature increases, the atoms in the wire vibrate more, which can impede the flow of electrons, thus increasing resistance. The relationship between temperature and resistance depends on the material of the wire and can be calculated using temperature coefficients.

Can resistance per meter be used for any type of wire?

Yes, the concept of resistance per meter can be applied to any type of wire, regardless of its material, as long as you know the total resistance and the total length of the wire. However, the specific resistance per meter value will vary depending on the wire’s material due to differences in resistivity.

Why is it important to calculate the resistance per meter of a wire?

Calculating the resistance per meter of a wire is important for several reasons. It helps in designing electrical circuits by allowing engineers to estimate how much resistance a wire of a certain length will add to a circuit. This is crucial for ensuring that the circuit functions correctly and efficiently and can help in minimizing energy losses due to resistance.